Links

The PGRouting website and a page on using PGRouting with OSM data.

Travelling Salesman: "Traveling-Salesman is a routing and navigation program for the OpenStreetMap. It is written to encourage experimentation. Nearly every part of it is developed as a plugin and can be replaced." Java-based. Uses OSMNavigation (which I seem to recall Kostas saying uses PGRouting...?)

OSM's routing wiki page

Road graph plugin for QGIS

Ed Manley: navigating the city / mimimising but not minimal distance